SB2026110845 - Multiple vulnerabilities in PUPnP

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Main Vulnerability Database SB2026110845

SB2026110845 - Multiple vulnerabilities in PUPnP

Published: November 8, 2026

Security Bulletin ID SB2026110845
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Data manipulation

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Improper Certificate Validation (CVE-ID: N/A)

CWE-ID: CWE-295 - Improper Certificate Validation

CVSSv4: 9.1 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N]


The vulnerability allows an unauthenticated remote attacker to intercept and alter HTTPS communications trusted by PUPnP applications.

The vulnerability exists due to missing certificate and hostname validation in the HTTPS client when an application built with UPNP_ENABLE_OPEN_SSL, which is disabled by default, fetches an HTTPS URL. An unauthenticated remote attacker can impersonate the server from an on-path position using a self-signed, hostname-mismatched certificate and supply attacker-controlled responses.


Remediation

Install update from vendor's website.

References